I gave my broody chicken 6 potentially fertile eggs. I poked around a little today since it's day 21 and I hear cheeps! I think I see at least one broken shell. I closed the hen house door so the other chickens are trapped in the run and she has some security (although the this might mess up the other chickens laying) Should I keep her and the chicks isolated? Do I let nature run it's course?

Any advice is helpful and appreciated- I have no clue and I don't want to have any chicks die when it was preventable.
Any advice is helpful and appreciated- I have no clue and I don't want to have any chicks die when it was preventable.